Nicolas Reinecke (nr@das-labor.org) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/7102
-gerrit
commit d786f4a0a56c335b280c0f1847abf1cbda59f08e Author: Nicolas Reinecke nr@das-labor.org Date: Fri Oct 17 15:09:05 2014 +0200
lenovo/t520: Apply ME workaround for S3 resume
Without this patch the laptop powers down after resume.
Change-Id: Ic6486fd4c4cc55b1ac5695f9d6d83fc2193b7eba Signed-off-by: Nicolas Reinecke nr@das-labor.org --- src/mainboard/lenovo/t520/acpi/platform.asl | 6 +++++- src/mainboard/lenovo/t520/dsdt.asl | 1 + 2 files changed, 6 insertions(+), 1 deletion(-)
diff --git a/src/mainboard/lenovo/t520/acpi/platform.asl b/src/mainboard/lenovo/t520/acpi/platform.asl index 5466bed..f937dc5 100644 --- a/src/mainboard/lenovo/t520/acpi/platform.asl +++ b/src/mainboard/lenovo/t520/acpi/platform.asl @@ -68,6 +68,10 @@ Method(_PTS,1)
Method(_WAK,1) { - /* Not implemented. */ + /* ME may not be up yet. */ + Store (0, _TZ.MEB1) + Store (0, _TZ.MEB2) + + /* Not implemented. */ Return(Package(){0,0}) } diff --git a/src/mainboard/lenovo/t520/dsdt.asl b/src/mainboard/lenovo/t520/dsdt.asl index e48a590..b6b4b33 100644 --- a/src/mainboard/lenovo/t520/dsdt.asl +++ b/src/mainboard/lenovo/t520/dsdt.asl @@ -24,6 +24,7 @@ #define BRIGHTNESS_DOWN _SB.PCI0.GFX0.LCD0.DECB #define ACPI_VIDEO_DEVICE _SB.PCI0.GFX0 #define RP04_IS_EXPRESSCARD 1 +#define EC_LENOVO_H8_ME_WORKAROUND 1 #define HAVE_LCD_SCREEN 1
DefinitionBlock(